You do not need to compile to have it incorporated into the "official" pakset, you simply need to send your graphics to James or make them publicly available and send us a link. It would of course be best if you set up your own Github repository from which James could simply merge the changes you make into the main repository. Would you be interested in a guide into setting up a Github repository for that purpose?

You need to add the entries for the images in the .dat file as instructed in the step-by-step guide, otherwise it won't compile. Also, the definition for the Connex South Central livery is spelled "Connex-South-Central". All livery definitions are at the bottom of the pakset simuconf.tab. Finally, we will also need separate graphics for the trailer, which are shared with the Class 317, as well as for the rear driving trailer, which you can make by rotating the front driving trailer and re-rendering.To rotate the driving trailer, do as follows:-Hide all layers except the one with the vehicle model by shift+clicking the layers so the layer manager looks like this:-Press A to select the whole model. If you had something selected from before, press it twice.-Go to Object > Transform and select "Origin to Geometry"-Press Shift+S and select "Cursor to Selected"-Press 7 to view the model from above-Press R and type "180" to rotate.-Show all layers by shift-clicking them in the layer manager shown above. Then you can render.

Oh, and it would save us some time if you added the entries to the latest version of the .dat file.

Don't worry about messing it up - you cannot do irreversible harm. Making mistakes is how one learns. Once you get used to the work flow, you will find that it is quite straightforward and minimises the amount of repetitive work necessary to add new graphics to the pakset.

Do keep trying: I am sure that you will find it very satisfying when you manage to make a complete set of vehicles with a new livery that will compile without any alterations.

And now another set of liveries I have missed in this pakset, namely the Network SouthEast liveries for the Class 50 and the Mark 2A carriages, which operated on the West of England line in the 80's and early 90's. Here in the original livery:And in the revised livery:

How splendid! I fondly remember these locomotives and carriages in these liveries. I will incorporate these very shortly.

Incidentally, would you also be able to upload your modified .blend files? It will be very useful for anyone seeking further to modify any of the vehicles that you have modified with these new liveries. Indeed, one further modification that will need to be done very soon is to add first class versions of all of these carriages. If you would like to produce the graphics for these, that would save me some time, which I could then use to expedite the completion of the other elements of the passenger and mail classes feature.

Edit: One query, if I may: I see that you have put the new vehicles into a dark green livery. This green livery is used with some Mk. 1 carriages, not as the Southern Region green (which was lighter), but to use the graphics for the Mk. 1 carriages as part of certain multiple units that were painted in that green colour, as many of the centre carriages of these multiple units looked nearly identical to the locomotive hauled Mk. 1 carriages. I do not think that these multiple units had things like a BCK.

Had you prepared these graphics thinking that they were intended to be Southern Region green? I had wondered whether to add the two regional colour schemes of the later British Railways liveries (the Western Region and the Southern Region), but had provisionally decided against it on the basis that it would require two new livery schemes just for those two liveries. However, if you would like to add these, do feel free to do so (so long as you add the necessary BR(S) and BR(W) livery schemes), albeit it might be quite a bit of work for a relatively limited reward, especially considering that one may then want to have some of the later pre-nationalisation carriages in the same schemes, too (such as the Bulleid express carriages, for example). Whether you think that this is worth your time I will leave to your discretion.